Some of the heat near the surface of the earth _____ electricity.
| A．is used to making | B．are used for making |
| C．is used to make | D．are used to make |
—Are there any students in the classroom now?
—，only a few，I’m afraid．
| A．If there are | B．If some | C．If any | D．If many |
—Sorry, I forgot to water the flowers．
—．You can do it after lunch if you like．
| A．Me，too | B．That's right | C．Don't mention it | D．Never mind |
—Mum, may I go out to play football for a while?
—______. You need some exercise.
| A．Never mind | B．You’ve got it | C．Go ahead | D．It’s your turn |
Before the sales start, I make a list of ______my kids will need for the coming season.
| A．why | B．which | C．how | D．what |
Stephen Hawking believes that the earth is unlikely to be the only planet______ life has developed gradually.
| A．that | B．where | C．which | D．whose |